All gods are eternal. Even if the physical body is damaged, the divinity will be preserved under the wash of time, and a new divine body will gradually be formed.

For the gods, thousands of years are just a big dream, meaningless.

But Gao Huan understands that the real situation is not like this. Even if the gods are immortal, they must be born on the plane. But planes don't exist forever.

After the destruction of one plane, the gods will travel to other planes, but some of the divinity will be permanently lost under the pull of the destroyed plane.

The god will gradually become a sub-god, a false god, until eventually he completely loses all divinity and becomes a slightly more powerful mortal.

The plane where Gao Huan was originally located was in constant weakness, so Gao Huan's mother, the unknown god, would do everything possible to prevent the destruction of the plane.

The only way to change all this is to understand the nature of time and space, and then find a way to solve it.

Gao Huan asked the physics teacher this question, hoping to get the answer he wanted from the physics teacher.

The old man looked at Gao Huan, brushed his beard, and said, "Since you sincerely asked, I will tell you compassionately." A time crystal is a four-dimensional spatial crystal lattice with an ultra-short-range periodic structural motion in space-time. The main characteristic of the time crystal is the supersymmetry breaking of the supersymmetry of the supersymmetrical particles, that is, the CPT breaking, and the non-translational motion of the particle combination on the spatial axis, revealing the objective existence of the 'super-extra-dimensional' particles. Think of it as a clock that can keep its time running with unerring accuracy forever, even after the universe has reached heat death. A conventional crystal is a three-dimensional object in which their internal atoms are arranged in a regular order. A time crystal is a crystal of more than four dimensions, which has a periodic structure in space-time. A time crystal can spontaneously destroy the symmetry of time translation and do non-translational motion in space, and the composition of the time crystal is interrelated with the cross-existence of non-localized particles in 'space', which is the energy momentum of the 'extra dimension' of energy-efficient particles beyond 'localized space', and the existence of time crystal also reveals the meaning of the existence of 'super extra dimension'. It can change over time, but will continue to return to the same form it was in at the beginning, just as the moving hands of a clock periodically return to their original position. Unlike ordinary clocks or other periodic processes, time crystals are a state of minimal energy, just like space crystals. Think of it as a clock that can keep its time running with unerring accuracy forever, even after the universe has reached heat death. There are practical and important scientific reasons for constructing a space-time crystal: with this 4-dimensional crystal, scientists will have a completely new and more effective means to study complex physical properties and the complex interaction behavior of a large number of particles, or to study the so-called "many-body problem" in physics. Such space-time crystals can also be used to study the quantum world, such as the phenomenon of quantum entanglement, in which when one particle is manipulated, the other particle changes accordingly, even if the two particles are separated by a large distance. ”

Gao Huan wrote down all the words that the physics teacher said in his notebook, and he gradually had a little bit of an eyebrow in his heart about how to change the trajectory of the plane's decay.

So Gao Huan then asked: "Please tell me, old gentleman, is it okay to define the physics of time crystals?" I really want to know. ”

The physics teacher didn't expect Gao Huan to be such a studious student, so he nodded and replied: "According to the physicist's point of view, a time crystal should be a natural object, and its elements are moving in a repetitive pattern. Like a kaleidoscope, the pieces in it have been rotating in a loop to form a variety of beautiful patterns; Or like a clock, its hour hand completes a 360-degree rotation every 12 hours. However, unlike clocks or other ordinary objects with constantly moving parts, time crystals are in perpetual motion with the support of their own perpetual motion mechanism, which must conform to the laws of physics. ”

Gao Huan was very satisfied with the old man's answer, continued to take notes, and then asked: "So, what is the theoretical basis of this definition of physics?" ”

The physics teacher was overjoyed and immediately replied: "The time crystal follows a theory that physicists call 'breaking the symmetry of time'. The theory is that the principles of physics apply no matter where you are in space or where you are in time. You can run a physics experiment, you can do certain tests, and then take these experimental equipment and move to a place in any direction within an arbitrary short distance, or wait for any amount of time for a short time and then run some experiments again, and you should get the same results in all of these experiments. In this case, time and space are said to be perfectly symmetrical. ”

Gao Huan suddenly realized, it turns out that the time crystal is like this. Knowing such a theory, would he be able to change the fate of his imminent destruction of the original plane?

The physics teacher saw that Gao Huan still looked puzzled, so he continued to say to Gao Huan: "Maybe you want to know the relationship between time crystals and perpetual motion machines, I will answer you here." The movement of the time crystal should not consume any energy, instead, it should be in a stable state of minimum energy, just like diamonds and other traditional crystals. Even so, it is still in a perpetual motion. Time crystals do not violate the law of conservation of energy. Often, so-called perpetual motion machines will certainly not last long, because they are not in a ground state, their energy will be consumed with motion, and eventually the energy will be depleted. In a time crystal, energy is conserved as nothing is removed. In these objects, but the velocity of the atoms in the object is not zero. ”

Gao Huan stood up and saluted the physics teacher to express his gratitude, he had learned the ability to understand the truth of the world in the physics teacher's explanation. I couldn't help but sigh with emotion: "Ah, knowledge is power." The ancients did not deceive me. ”

The physics teacher also liked a studious student like Gao Huan, so he asked, "What, does this student have any other questions to ask?" ”

Gao Huan shook his head, indicating that he had finished asking his question.

The physics teacher then opened the textbook and prepared to give a lecture on today's lesson.

"Physics is the study of the most general laws of the motion of matter and the basic structure of matter. As a leading discipline of natural science, physics studies the most basic forms and laws of motion of all matter, from the universe to elementary particles, so it has become the research foundation of other natural science disciplines. Its theoretical structure makes full use of mathematics as its working language, and experiments as the only criterion for testing the correctness of theories, and it is the most sophisticated natural science discipline today. The physics teacher first briefly read the introduction in the textbook to keep the students' minds focused.

He then went on to say, "Our main lesson today is to start with a general introduction to atomic, molecular and optical physics. ”

Gao Huan took notes carefully in class.

The physics teacher explained: "The main content is to study the interaction between matter-matter and light-matter within the size of an atom or the structure of several atoms. These three areas are closely related. Because they use similar methods and scales related to energy. They both include classical and quantum processing methods; Approach the problem from a micro perspective. Atomic physics deals with the shells of atoms, focusing on the quantum control of atoms and ions; cooling and trapping; low-temperature collision dynamics; Accurate measurement of fundamental constants; The collective effect of electrons in structural dynamics. Atomic physics is influenced by nuclei. However, internal nuclear phenomena such as nuclear fission and nuclear synthesis belong to high-energy physics. Molecular physics focuses on polyatomic structures and their interactions, inside and outside, with matter and light, while optical physics here only studies the basic properties of light and the interaction between light and matter in the microscopic realm. ”

Gao Huan was so engrossed that he could completely keep up with the speed of the physics teacher's lecture, which amazed everyone. The students around me were completely stupid, and even ignored the teacher's lecture.

And the physics teacher continued to lecture, and only glanced in Gao Huan's direction from time to time. He went on to say, "Let's start with atoms. An atom is the smallest unit in which an element retains its chemical properties. A positive atom contains a dense nucleus and a number of electrons that are negatively charged around the nucleus. Whereas, the nucleus of a negative atom is negatively charged, and the surrounding negative electrons are positively charged. The nucleus of a positive atom is made up of positively charged protons and electrically neutral neutrons. The antiproton in the nucleus of the negative atom becomes negatively charged, thus making the nucleus of the negative atom negatively charged. When the number of protons is the same as the number of electrons, the atom is electrically neutral; Otherwise, it is a positively or negatively charged ion. Depending on the number of protons and neutrons, the types of atoms are also different. The number of protons determines which element the atom belongs to, while the number of neutrons determines which isotope the atom is of that element. Atoms make up molecules, and molecules make up substances, and the same kind of charges repel each other, and different kinds of charges attract each other. ”

Before you know it, a physics lesson is over.

The physics teacher took a deep breath, closed the book, and prepared to leave the classroom.

However, when the physics teacher pushed the door and walked out of the classroom, what he didn't expect was that a bloody mouth was already waiting for him outside the door, and he swallowed him directly the moment he pushed the door out.

"Hahaha!" A burst of wild laughter resounded throughout the campus.

Through the window of the classroom, Gao Huan once again saw the huge black and white terrifying figure, like an unending nightmare, descending on the campus again!